code: def average(x):
      return math.fsum(x) / len(x)
  
file_path: backtrader/samples/sratio/sratio.py
imports: from __future__ import absolute_import, division, print_function, unicode_literals
  import argparse
  import itertools
  import math
  import operator
  import sys
label_desc: Use image node_id 1 for calling a global function with example usage: average(x) and returns: unknown